[1]臧万军,刀慧娟.铁路瓦斯隧道通风流场及参数优化[J].福建理工大学学报,2025,23(03):236-244.[doi:10.3969/j.issn.2097-3853.2025.03.005]
　ZANG Wanjun,DAO Huijuan.Optimisation of ventilation flow field and parameters in railway gas tunnels[J].Journal of Fujian University of Technology;,2025,23(03):236-244.[doi:10.3969/j.issn.2097-3853.2025.03.005]
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铁路瓦斯隧道通风流场及参数优化
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《福建理工大学学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第23卷
期数:
2025年03期
页码:
236-244
栏目:
出版日期:
2025-06-25

文章信息/Info

Title:
Optimisation of ventilation flow field and parameters in railway gas tunnels
作者:
臧万军; 刀慧娟
福建理工大学土木工程学院
Author(s):
ZANG Wanjun;  DAO Huijuan
Key Laboratory of Underground Engineering in Colleges and Universities of Fujian Province
关键词:
铁路隧道; 数值模拟; 台阶法; 瓦斯隧道
Keywords:
railway tunnels;  numerical simulation;  step method;  gas tunnels
分类号:
U453.5
DOI:
10.3969/j.issn.2097-3853.2025.03.005
文献标志码:
A
摘要:
为有效降低瓦斯隧道内被污染气体的浓度，文章结合实际工程，采用FLUENT软件进行数值模拟，探究瓦斯隧道内的通风流场特征和瓦斯浓度分布规律，并分析不同参数条件下隧道洞内的通风效果。结果表明:在通风20 min后隧道内流场基本稳定，上台阶形成涡流，使得受污染的空气以及粉尘难以排出，且在风筒异侧拱脚处出现瓦斯积聚的情况;台阶法压入式施工通风中，台阶高度、台阶长度及风管口距上台阶掌子面的距离之间存在优化组合。建议台阶高度取4~6 m，台阶长度取5~15 m，风筒出风口距上台阶掌子面的距离取10~15 m。
Abstract:
In order to effectively reduce the concentration of contaminated gas in the gas tunnel, practical engineering is combined with numerical simulation using FLUENT software to investigate the characteristics of the ventilation flow field and the distribution law of gas concentration in the gas tunnel, and to analyze the ventilation effect of the tunnel under different parameter conditions. Results show that: the flow field inside the tunnel is basically stable after 20 min of ventilation, a vortex is formed on the upper step, which makes it difficult to discharge the polluted air and dust, and gas accumulation occurs at the foot of the opposite side of the wind pipe; in the press-in construction ventilation by the step method, there is an optimal combination of the step height, step length and the distance between the nozzle and the palm surface of the upper step. It is suggested that the height of the step is 4~6 m, the length of the step is 5~15 m, and the distance of the air duct outlet from the palm face of the upper step is 10~15 m.

参考文献/References:

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更新日期/Last Update: 2025-06-25